Section 041-12-4 - Periodic Inspections of Power BoilersA.Frequency and Method. Before the initial inspection certificate expires, and annually thereafter, all power boilers in the State must be inspected as follows: an Inspector must conduct 1 annual certificate inspection, which must be an internal inspection, and 1 annual external inspection conducted approximately 6 months from the date of the certificate inspection while the boiler is in operation. Miniature boilers must receive a certificate inspection once every year and an internal inspection once every 2 years. The external inspection must be documented by the Authorized Inspector on the inspection certificate.B.Report. An Inspector must submit a report of each certificate inspection required under Paragraph A to the Board on a form approved by the Board.02-041 C.M.R. ch. 12, § 4